There are missing runes (E and TH and Q aka nasal NG) (the elder futhark contains 24 signs) + the rune under Y should be under J, C should be the same as K but not Q (which should have its particular one) and X (C/K+S) does not exist.

Also, is there a way to type a doubled rune? A doubled rune being one rune with a dot underneath it. For example, when I typed "hello" in rune, I was hoping the two L's would be typed as one singular L and have a dot under it.